Hi All,
Recently purchased a dead switch.
No power, doesn't draw a current and battery dead.
Battery is showing 2.73V
I was getting a few shorts on the caps around both M92T36 and BQ24193.
I wasnt getting any input from the USB C port, I fixed this by removing a couple bridges the previous repair person made putting a new one on, now I get 5.17v input and drawing 0.45 and 0.52 amps
So I ordered both chips and the M9 turned up today so I thought I would start with that.
I replaced it and all the shorts have gone from both areas of the board, however I am now not drawing any amps over the charger and the batteries voltage in turn hasn't increased.
I have checked pin 5 of the M9 and I am only getting approx 2v from it and I'm not able to get anything from the capacitor inline with it.
I am 99% sure it has been installed correctly I have taken it back off and on two more times to make sure, each trace has been tinned ever so slightly prior to installation.
Does that mean the new chip is dead or I also need to replace the BQ too ?
Thanks in advance.
Recently purchased a dead switch.
No power, doesn't draw a current and battery dead.
Battery is showing 2.73V
I was getting a few shorts on the caps around both M92T36 and BQ24193.
I wasnt getting any input from the USB C port, I fixed this by removing a couple bridges the previous repair person made putting a new one on, now I get 5.17v input and drawing 0.45 and 0.52 amps
So I ordered both chips and the M9 turned up today so I thought I would start with that.
I replaced it and all the shorts have gone from both areas of the board, however I am now not drawing any amps over the charger and the batteries voltage in turn hasn't increased.
I have checked pin 5 of the M9 and I am only getting approx 2v from it and I'm not able to get anything from the capacitor inline with it.
I am 99% sure it has been installed correctly I have taken it back off and on two more times to make sure, each trace has been tinned ever so slightly prior to installation.
Does that mean the new chip is dead or I also need to replace the BQ too ?
Thanks in advance.